Notably, Cydia Substrate does not work with the LiberiOS jailbreak at this time. Saurik recently revealed that he is working with a well known developer to release a jailbreak of iOS 11.0 - 11.1.2 with a working Cydia and Cydia Substrate.

Yeah, what ever, we need a jailbreak for an iOS that is still being signed, or a why to use the shsh blobs that we were saving for I don't know how long now, a downgrade maybe would be much appreciated than a jailbreak.